cynthiachristinebabynews2.jpgCynthia Nixon and her longtime girlfriend/fiancee Christine Marinoni are the proud new parents of a baby boy!

Marinoni delivered the healthy baby on Monday, a rep confirmed to Us.

Max Ellington Nixon-Marinoni is the first child for the couple. Nixon has two previous children, Samantha, 14, Charles, 8, from a previous relationship.

Nixon and Marinoni have been dating since 2004 and got engaged in 2009.

Congrats to the proud new moms!